摘要
经济社会的高质量发展对隧道工程的环境效益提出了更高要求。以宝石岭隧道K60+160—K60+180段涌水为工程背景,首先归纳整理了隧道涌水引起的地下水位下降、地表塌陷、房屋开裂等水环境负效应;其次进行注浆参数设计和注浆施工,注浆圈厚度4 m,浆液为1∶1水泥浆添加3%水玻璃;最后通过涌水量、地下水水位、隧道衬砌承载力检验了注浆效果。结果表明,涌水量由注浆前的12.53 m^(3)/(d·m)下降到2.41 m^(3)/(d·m),降幅达到80.8%;地下水水位由注浆前的大于20 m逐渐上升至约15 m;初衬外水压力降幅达68.6%,安全系数大于2.0;可见注浆后涌水量和衬砌外水压力大幅降低,地下水位得到了恢复,注浆堵水限排的效果明显。研究成果为隧道开挖引发的水环境效应的治理提供了一定的借鉴。
The high quality development of economy and society puts forward higher requirements for the environmental benefits of tunnel engineering.Taking the water inflow of section K60+160—K60+180 of Baoshiling Tunnel as the project background,the negative effects of water environment such as groundwater level drop,surface collapse and house cracking caused by water inrush are summarized.Secondly,the grouting parameter design and grouting construction are carried out.The grouting ring thickness is 4 m,and the slurry is 1∶1 cement slurry with 3%water glass.Finally,the grouting effect is tested by the water inflow,groundwater level and bearing capacity of tunnel lining.The results show that the water inflow decreases from 12.53 m^(3)/(d·m)before grouting to 2.41 m^(3)/(d·m),a decrease of 80.8%.The groundwater level gradually rises from more than 20 m before grouting to about 15 m.The water pressure drop outside the initial lining is 68.6%,and the safety factor is greater than 2.0;It can be seen that the water inflow and the external water pressure of the lining are greatly reduced after grouting,the groundwater level is restored,and the effect of grouting is obvious.The research result provide some reference for the treatment of water environmental effects caused by tunnel excavation.
作者
丁蔚
陈子扬
刁浩宇
乐玲
陆从山
DING Wei;CHEN Ziyang;DIAO Haoyu;LE Ling;LU Congshan(Anhui Transportation Holding Construction management Co.,Ltd.,Hefei 230041,Anhui,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China)
出处
《水利水电技术（中英文）》
北大核心
2023年第S02期215-219,共5页
Water Resources and Hydropower Engineering
基金
安徽省交通控股集团科技项目(JKKJ-2020-10)。
关键词
隧道
地下水
水环境效应
注浆
tunnel
groundwater
water environmental effects
grouting
